Nautlius vs LibreDict
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Nautlius
This app provides a comprehensive suite of tools for STEM education and professional use. It offers engineering calculators, unit conversions, property lookups, and simulation capabilities. Students and professionals can utilize it for quick calculations and data analysis.
- Engineering calculators
- Free body diagrams
- Property lookup tables
- Experiment simulations
- Unit conversion
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Nautilus is an engineering and STEM toolbox for students and professionals. Features: - Engineering Calculators: Choose from hundreds of equations and subjects for quick calculations - Free Body Diagrams: Quickly copy and paste free body diagrams with calculated values - Property Lookup: Easily find values from tables and properties - Simulations: Run your own simulations for various experiments - Unit Conversion: Convert between hundreds of units Nautilus does not contain any subscriptions or in-app purchases.
LibreDict
This app provides a fast, offline dictionary with over 300,000 words across five languages. It prioritizes privacy with no ads or tracking, offering a clean interface and customizable search results.
- 100% Offline access
- Five built-in dictionaries
- Supports four app languages
- Smart Arabic search
- Color-coded results
- Customizable dictionary order
- Import custom dictionaries
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LibreDict is a lightweight, ultra-fast dictionary built for focus and privacy. With over 300,000 words across five built-in dictionaries, you can search and learn without ever needing an internet connection. Key features: - 100% Offline: Every dictionary lives on your device — perfect for travelers and students. - Five Dictionaries Included: English (WordNet), Russian–English, Spanish–English, English–Spanish, and Arabic–English. - Four App Languages: Use LibreDict in English, Russian, Spanish, or Arabic — with full right-to-left layout for Arabic. - Smart Arabic Search: Type Arabic words without diacritics and still find the vocalized entries. - Color-Coded Results: Each dictionary has its own colored stripe, so you instantly see where a word comes from. - Your Order, Your Way: Sort by relevance or put your preferred dictionaries first, and drag to reorder them. - Expandable Library: Import your own custom dictionaries via .json or .sqlite files. - Privacy First: No ads, no tracking, no accounts, no data collection. - Minimalist Design: A clean, fast interface optimized for readability. - Manage Sources: View detailed statistics for each dictionary and toggle any of them on or off. LibreDict stays out of your way — just you and the words.
Screenshots
Verdict
The clearest difference is rating: Nautlius at 5.0 against LibreDict's 3.7. On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Nautlius holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 2 and 3 respectively.
| Parameter | Nautlius | LibreDict |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 3.7 (3 ratings) |
| Number of ratings | 2 | 3 — better |
| Update frequency | — | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 103 MB |
| Age rating | 4+ | 4+ |
| Developer | Troy Husted | KIRILL YUKHIN |
In-app purchases
Nautlius
No in-app purchases
LibreDict
No in-app purchases









